Adjustable rim



July 19, 1938. GRANGE I 2,124345 4 ADJUSTABLE RIM Filed Feb. 8, 1957 2 Sheets-Sheet 1 July 19, 1938. L. o. GRANGE 4,

ADJUSTABLE RIM Filed Feb. 8, 1957 2 Sheets-Sheet 2 I n I l a i 5 I v H r (3 l Q Lo O. Grange Patented July 19, 1938 E PIA-TENT. OFFICE f AllJ U STABLE RIM Leo O.. Gra,nge, Chicago, Ill., assignor to Safety vvVulcanizer Company, Chicago, 111., a corpora tion of Illinois Application February"8, 1937, Serial No. 124,710

team's. (01.18-18) This invention relates to adjustable rimsfor supporting various sizes of pneumatictires;

One object of the invention'is to'provide an adjustable rim of the character described whereby the tires may be easily and quickly mounted and dismounted. {t j,

Another object of the invention is'to'provide an adjustable rimin which the adjustability for different rim widths is obtained byivirt'ueof a single central adjustment means.

These and other objects of the invention are attained by means of. the adjustable rim illustrated in the accompanying drawings and de'- scribed below. It is understood that the inven- 2 tion is not limited to the specific form thereof shown and described.

Of the accompanying drawings.

Figure 1 is a plan view of an adjustable rim embodying the invention.

Figure 2 is a front elevation thereof.

Figure 3 is a cross-section of the rim with an expanded tire mounted therein, 'portionsof the tire being broken away.

Figure 4.15 an enlarged fragmentary viewof the fixed hub of the rim as viewed fromthe under side of Figure 3.

Referring-to the drawings, IO-is a rim base preferably having fixed-thereon one bead flange II. Interiorly of the base I0 there may be'a; spider I2 comprising a hub portion I3- and snakes. I4, I4 extending therefrom" to a rigid connection with the inner periphery of said base I0. Removably mounted in a bore I5 in the hub I3 there may be a central shaft I6, provided adjacent one end thereof with projecting pins I1, I! adapted to be engaged with grooves I8, I8 on the outer face of the hub I3, to prevent rotational movement of the shaft I6 with respect to the hub I3 and to limit movement of the shaft I6 in one direction through the bore |5 in the assembled condition of the rim. Movement of the shaft I6 may be limited in the other direction by means of a spring assembly I9 held in position by a pin 20. The hub |3 may have openings 2|, 2| extending therethrough, intermediate the grooves I8, I8, through which the pins I1, I! may be allowed to pass by urging the shaft I6 against the pressure of the spring I9 sufliciently to release the pins I1, I! from the grooves I8, I8 and rotating the shaft I6 to a position where the pins I1, I I may be passed through the openings 2 I, 2 I.

Slidably mounted on the outer periphery of the base I0 and guided thereon by engagement of the inner periphery of the bead flange with the outer periphery of the base In may be an adjustable bead flange 24, supported on a spider 25 com prising a. hub portion 26 having a bore 21, adapted loosely to receive the shaft I6, and hav-' ing' arms 28, 28 extending from the hub 26 to a fixed connection with the adjustable bead flange 24. The arms 28, 28 may be adapted to be slid-j ably received through slots 29; 29 in the base I0 adjacent one margin thereof. The slots 29, 29 may be open at said margin to permit the'bead flange 24 to be removed from the rim to'facilitat'e mounting and dismounting the tire 30. There may be provided a nut 3|, having an operating handle 32 thereon, for the purpose of retaining the bead flange 24 on the rim base III as well as to provide a central adjusting means when'the tire 38 is mounted on the rim. v I

In mounting a. tire of any desired bead width on the rim, the bead flange 24'is first removed from the rim assembly. This is accomplished by urging the shaft I6 against the action of spring lflsufficiently to release thepins IT, IT from the grooves I8, I8 and allow said shaft to be rotated until the pins l1, I! may be passed through the openings 2|, 2|, thus enabling the operator to remove the shaft I6 with the spider 25 and nut 3| thereon. After a deflated tire 30 with a pneumatic tube or bag 3|] therein, has been placed in position on the rim base III, the shaft I6 with the spider 25 and the nut 3| mounted thereon has its end adjacent the pins I'I, IT inserted in the bore I5 in thehub I3 in such a manner that the pins II, I1 coincide with the openings 2|, 2|. In" this position the shaft I6 may be urged against the spring I9 until the pins I1, I! are free on the outer side of the hub I3, when the shaft I6 may be rotated a quarter turn to allow the pins I1, I! to come to rest in the grooves I8, I8. The pins I1, I! are then held in position in the grooves I8, I8 by the action of the spring I9 and prevent further rotation of the shaft I6. In placing the shaft I6 in this position the nut 3| may be backed off a suflicient distance from the hub 26 of the spider 25 to permit shaft I6 to be urged to the position shown in chain-dotted lines in Figure 3.

With the tire 30 on the rim the removable and. adjustable bead flange 24 may be adjusted to space the rim flanges the required distance apart for the tire being mounted, the adjusting nut 3| being turned against the hub 26. The proper pressure is applied to the tire to inflate the same on the adjusted rim. In this condition the complete assembly is ready for use.

From the foregoing brief description of the adjustable rim and the operation thereof it is apparent that the mounting and dismounting of *tires for the aforementioned purposes may be accomplished with a rapidity that is very desirable, the adjustability of the rim being controlled at a single central point obviating manipulation of a plurality of nuts as has been required in the past.

The improved rim is useful for many purposes, 6. g. in mounting various tires while being repaired, being used in place of standard rims in certain types of repair vulcanizers. It is also useful for mounting various tires for display, dem

onstration, or other purposes.

Modifications of the invention may be resorted to without departing from the spirit thereof or the scope of the. appended claims.

What'is claimed is:

1. A supporting rim structure for pneumatic with a hub, an axially adjustable and removable I flange at the other sideof said rim base and slidable upon and guided by said rim base, said lastnamed flange being carried by a supporting central spider having a hub, a shaft extended through the hub on said rim spiderand the hub on said flange spider, means for releasably securing said shaft to said rim spider whereby the rim flange and its supporting spider may be removed from the rim base, and a nut threaded on said shaft for retaining said flange spider on said shaft at various axial positions.

2. A supporting rim structure for pneumatic tires comprising a rim base having a flange at one side thereof and. a central spider provided With a hub, an axially adjustable and removable flange at the other side of said rim base and slidable upon and guided by said rim base, said lastnamedflange being carried by a supporting central spider having a hub, a shaft extended through thehub onsaid rim spider and the hub on said flange spider, means for releasably securing said shaft to said rim spider whereby the rim flange and its supporting spider may be removed from the rim base, and a nut threaded on said shaft for retaining said flange spider on said shaft at various axial positions, said rim base having axially'extending slots therein at said other side thereof and the arms of said flange spiderextending through said slots.

3. A supporting rim structure for pneumatic tires comprising a rim base having a flange at one side thereof and a central spider provided with a hub, an axially adjustable and removable flange mit mounting or dismounting of a tire on the rim,

and a nut threaded on said shaft for retaining said flange spider on said shaft at various axial positions, said releasable securing means comprising a bayonet type releasable interlocking connection between the shaft and the rim spider.

41 A supporting rim structure for pneumatic tires comprising a rim base having a flange at one side thereof and a central spider provided with a hub, an axially adjustable and removable flange at the other side of said rim base and slidable upon and guided by said rim base, said lastnamed flange being carried. by a supporting central spider having a hub, a shaft extended through the hub on said rim spider and the hub on said flange spider, means for releasably securing said shaft to said rim spider whereby said rim flange may be quickly rempved with its spider to permit mountingor dismounting of a tire on the rim, and a nutthreaded on said shaft for retaining said flange spider on said shaft at various axial positions, said releasable securingmeans comprising a bayonet type releasable interlocking connection between the shaft and the rimspider, said shaft having bayonet pins thereon and said rim spider hub having bayonet slots therethrough permitting passage of said pins in one position of the shaft, and said rim spider hub having notches thereon to be engaged by said pins when in locked engagement, and means for yieldingly urging said shaft and said rim spider axially of each other to hold said pins in said notches.

5. The combination in a pneumatic tire supporting rim structure, of a rim having a central spider, an axially adjustable flange for said rim slidable upon and guided by said rim and also having a central spider, a shaft for mounting said spiders, means for releasably securing the shaft to one spider, whereby the adjustableflange may be completely removed from said rim with its supporting spider, and means for retaining the other spider on said shaft in Various positions of axial adjustment thereon.

LEO O. GRANGE. 

